import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
public class Key1 extends JApplet implements KeyListener{
public int cx = 500, cy = 300;



    public void init()
    {
        addKeyListener(this);
        setSize (1000, 600);
        setBackground(Color.white);
      
    }
    
   public void paint(Graphics page){
    
        page.setColor(Color.black);
        page.fillOval(cx - 13, cy - 13, 26, 26);
        

    }
    
        //Called when the key is pressed down.
    public void keyPressed(KeyEvent e){
      
    if(e.getKeyCode()==37) {//check if the Keycode is 37 which is left
    cx = cx - 5;//move left
    repaint();
}
    if(e.getKeyCode()==38) {//check if the Keycode is 38 which is left
    cy = cy - 5;//move up
    repaint();
}
    if(e.getKeyCode()==39) {//check if the Keycode is 39 which is left
    cx = cx + 5;//move right
    repaint();
}
    if(e.getKeyCode()==40) {//check if the Keycode is 40 which is left
    cy = cy + 5;//move down
    repaint();
}

}
    
    //Called when the key is released    
    public void keyReleased(KeyEvent e){
    
    }
    //Called when a key is typed
    public void keyTyped(KeyEvent e){
    
    
}
  
}  

public void paint(Graphics page){
    page.clearRect(cx-13-5, cy-13-5, 26 + 10, 26 + 10);
    page.setColor(Color.black);
    page.fillOval(cx - 13, cy - 13, 26, 26);
}

page.setColor(Color.white);
page.fillRect(0, 0, this.size().width,this.size().height);


//and then the rest of ur code  page.setColor(Color.black)....

page.fillClear(0, 0, this.size().width,this.size().height);


//and then the rest of ur code  page.setColor(Color.black)....